<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>计算器</title>
    <link rel="shortcut icon" href="./icon.png" type="image/x-icon">
    <link rel="stylesheet" href="./index.css">
</head>

<body>
    <div class="calc_wrap">
        <div class="screen"></div>
        <div class="operation_area">
            <div class="btn" onclick="handleClick('7')">7</div>
            <div class="btn" onclick="handleClick('8')">8</div>
            <div class="btn" onclick="handleClick('9')">9</div>
            <div class="btn" onclick="handleClick('÷')">÷</div>
            <div class="btn btn_clear" onclick="handleClick('c')">清除</div>
            <div class="btn" onclick="handleClick('4')">4</div>
            <div class="btn" onclick="handleClick('5')">5</div>
            <div class="btn" onclick="handleClick('6')">6</div>
            <div class="btn" onclick="handleClick('×')">×</div>
            <div class="btn btn_equal" onclick="handleClick('=')">=</div>
            <div class="btn" onclick="handleClick('1')">1</div>
            <div class="btn" onclick="handleClick('2')">2</div>
            <div class="btn" onclick="handleClick('3')">3</div>
            <div class="btn" onclick="handleClick('-')">-</div>
            <div class="btn btn_zero" onclick="handleClick('0')">0</div>
            <div class="btn" onclick="handleClick('.')">.</div>
            <div class="btn" onclick="handleClick('+')">+</div>
        </div>
    </div>
</body>

</html>
<script src="./index.js"></script>